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Superb, corner-to-corner consistency. Resolution, contrast and image brightness are maintained not just at the image center, but also in the corners a hallmark of Carl Zeiss design.

Carl Zeiss T (T-star) coatings. Internal reflections on the glass-to-air surfaces can create veiling glare, which reduces contrast and takes the life out of your pictures. The SAL1635Z overcomes this issue with the famous Carl Zeiss T coatings.

Super low distortion. The lens minimizes field curvature even at wide angle settings.

Short Minimum Focusing Distance. With the ability to focus as closely as 11 inches (0.28 m), this wide angle zoom lens also lets you move in for dramatic perspectives on people, natural subjects and close-up details.

In-Camera Image Stabilization. Because Sony builds SteadyShot image stabilization into the a cameras, the SAL1635Z does what other lenses can't. This is the world's only large-aperture, full-frame capable wide-angle zoom with the benefit of image stabilization (as of Sept. 2008).

Super Extra-low Dispersion (Super ED) and ED glass. Newton showed that different colors bend at different angles when they pass through glass. In lenses, this causes the problem of chromatic aberration. Sony solves the problem with a Super ED and an ED glass element. You get sharp, clear images with well defined colors.

Three aspherical elements. Fast lenses have a difficult time maintaining sharpness at maximum aperture. The SAL1635Z is amazingly fast for a 16-35mm zoom. Yet thanks to three aspherical elements, the lens achieves incredibly consistent, corner-to-corner sharpness at maximum aperture.

Circular Aperture. Because the aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect. The lens features nine aperture blades.

Auto Clutch. For reliable operation, the manual focus ring does not rotate in auto-focus mode.